Symptoms of advanced skin cancer are accompanied by purulent infection with foul odor and pain. Regional lymph node metastasis is mostly seen, and the patient has giant squamous cell carcinoma on the head, which is foul-smelling, with more purulent discharge and easy bleeding; then it gradually expands and can erode the surrounding tissues and organs and become erosive ulcer. Related symptoms Red skin scars that do not fade for a long time, ulcers, subcutaneous nodules, wart-like proliferation.